Dental vibratory apparatus



D. BUMGARDN-E-R.

DENTAL VIBRATORY APPARATUS.

APPLICATION FILED 1AN.30, |922.

.Lqtyyg Patented Nov. 28, 1922?..

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DAYTON BUMGARDNER, OIE' CHICAGO, IIILJLIJ.\]'OIS. i

DENTAL VBBATOBY APPARATS.

Application filed. January 30, 1922. Serial No. 532,747.

To all flo/ione, t may concern:

Be it known that l, DAYTON BUHGARDNER, a citizen ofthe United States, and a resident ot the city oli Chicago, county of Cook, and- State of illinois, have invented certain new and useful. improvements in Dental Vibrap the following is a tory Apparatus, of which. specification.

My invention relates to dental vibratory apparatuses, and has lfor its principal object the provisionoit a construction et this character which is especially adapted if'or condensing composition used toy models, such as `are made 'from an impression of teeth.

ect of the invention is such that The ob] the composition, oi which the model is formed, will be caused to condense by subjecting the` impression, from which the .model is formed to a vibratory treatment while the composition is being fed into theimpression. By this arrangement the yconiposition, whichis in theitorm of a plastic substance, when fed into the impression, is caused to condense and torce the moisture contained in the `composition to the surface. This vibratory treatment causes the air bubu bles to disappear which would otherwise disiigure the model when hardened or. interfere with the durability of the same and the moisture is caused `t rise to the surface of `the composition which ,permits the composi 'tion to readily harden inasmuch as by4 the vibratory treatment the 'coreor` innermost portion or' the model is to a great extent free from moisture.` After the compositionis completely hardened, the impression, which is of a war` composition, or any other impression material, is removed and themodclis then subject to 'further treatment.which is well known in the dental, art.` i `r 'i d @ther objects .villappeai hereinafter. i The invention ronssts in the combiiuatioiis and arrangements of parts hereinafter de scribed and claimed.` f. i.

The invention will be het understood by reference to the accompanying drawings forming a part ofthisspeciiication, rand in which, y u

Fig. l is a side elevational view of a device embodying the invention; f 1

Fig. 2 is a top plan view, ofthe' same, showing the vibrating means attac-hed to a motor;

4lilig. 3 is a plan view'oi the vibratingmeans embodied in the invention; l Fig. 4l is a sectional detail View of an impression; and

Fig. 5 is a perspective view of a model formed from the impression illustrated in In carrying the invention into effect, I provide a vibratory member A which is` in `the form of a swingingly mounted arm ybent in the form illustrated in Fig. 1. The arm lOis preferably formedof springI steel which in this instance is inthe form of a narrow plate, as shown, the foot 11 of, the arm 10is 4provided with an elongated slot 12 ar ranged and adapted to .slidably engage a `bolt 13 whichis preferably `screwed in a socket member 14 sunk into the top 150i a work bench or the like. At one end oit' the `slot 12 is an opening 16 which is of'adiam; eter a trifle larger than the head of the bolt l2 to permit the arm` l0 to be'removed when not in use. Thehorizontal portion 17 of the arm 10 carries' a platform 18, which, as shown, is rectangular in shape and iixedly secured to thesaid portion by suit able rivets 19. `The platform 18 and the meansL for` securing the saine to the hoi-i- Zonta). portion can be of any approved shape or `means which will answer the purpose.

.llhe` means for causing the arm to vibrate is in this instance in the form of a polygonal cam meniberQO, arranged under the horifzontal portion-17Ty in spaced relation with respect thereto, `carried by a screw threaded `tapered spindleQl, said polygonal member being formed oi fibreor any other suitable material. The end 21': of the spindle 21 is provided with a socket-22tor the reception ofthe end of the shaft 23 oi apower driven. motor 2li; The spindle 2l. caribe removably secured to =the` shaft `23. by any `suitable means, but in this instance the shaft of the motor 24 is arranged to lt'rictionally engage the socket portioiioi the spindle 2t Carried by the platform 18 and extending downwardly therefrom is a finger 25 which is arranged to contact with the hub 26 of the polygonal member 2O when in operative position. rlhe purpose of the finger 25 is to control the r swinging movement of the arm 1() whenv swung in operative position.

ln use, the impressionB, which is of any Shape or'sze, illustrated in Fig,1 4-, is held y in one hand by the operator and permitted to freely rest on the platform 18, the hand serving to retain the impression on the platform 18. By manually applying a downwardly pressurel to the arm 10 the horizontal portion 17 is brought into contact with the hexagonal member 20 which is rotated by the power driven motor 24. This contacting of the horizontal portion 17 of the arm 10 is caused to vibrate upon rotation of the polygonal member 20. The amount of vibration transmitted to the vibratory member A depends upon the pressure applied to the horizontal portion 17, that is to say, that the greater the pressure, the greater the vibration. As the composition is fed into the impression the vibration of the vibratory member A causes the composition to spread out and pass into the deep impressions which are usually found in the impressionraswell as causes the composition to condense and raise the moisture to the top surface of the said composition, The opera-tor continues to gradually feed the composition f into theimpression until the impression is completely filled. At this stage the composition has the appearance. of putty and if the form shouldzbe broken open, the core of the same would be found to be in a semistate of dryness, that is to say, going through the process of hardening. As herein stated the vibratory treatment-causes the composition to condense and raises or forces the moisture to the top surface thereof, the advantage being that the moisture is forced from the core or innermost part of the composition to the top thereof, greatly facilitating the hardening of the composition. After the composition is properly hardened within the impression B the impression is out away from the hardened composition, leaving the model C, as shown in Figure 5, in its finished state.

While my vibratory apparatus is especially adapted `for condensing the composition, of which the model C is formed from an impression B it also can be adapted to various other usages.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification Without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of the construction set forth,

but desire to avail myself of such variations motor, of a tapered spindle carried by the shaft of said motor; a polygonal cam member carried by said spindle; and a vibratory member adapted to be swung and forced into contact with said member, substantially as described.

2. An apparatus for compacting the coinposition of a dental model during the feeding of the composition in a dental impression comprising in combination with an electric motor, of a polygonal cam member carried by the shaft of said motor; a vibratory arm adapted to be swung and forced into contact with said member; and a platform carried by said arm above said member, substantially as described.V

3. In an apparatus for compacting the composition of a dental model during the hardening thereof comprising a swingingly mounted vibratory arm; means for vibrating said arm 5 and a platform carried by said arm over said vibrating means. 1l. In an apparatus for compacting the composition of a dental model during the hardening thereof comprising a polygonal cam member; a vibratory member adapted to be swung and forced into contact with said member; and a guide member carried by said vibratory member adapted to engage the hub of said polygonal .member when in operative position.

5. In an apparatus for compacting the composition of a dental model during the hardening thereof comprising a rotatable polygonal member; a vibratory arm mounted to swing and be forced into contact with said member; means for controlling the swinging movement of said vibratory member; vand a platform carried by said vibra- ,tnory member over said hexagonal cam mem- 6. An apparatus for compacting the com- 'positiony of adental model during the feeding of the composition in a dental impression comprising in combination with a socket member; of a screw threaded bolt engaging said socket member; a vibratory member removably held by said bolt; and means for vibrating said member, substantially as described.

r7. An apparatus for compacting the composition of a dental model during the feeding of the composition in a dental impression comprising in combination with a socket member; of a screw threaded bolt engaging said socket member; a vibratory arm adapted to slidab'ly engage said bolt; a polygonal member arranged in spaced relation with said vibratory arm adapted upon contacting with said arm to vibrate said arm; a depending guide finger carried by said arm adapted to engage the hub of said polygonal cam member; and a platform carried by said vibratory member above said polygonal cam member, substantially as dedescribed.

9. An apparatus for compacting the composition of a dental model during the feeding of the composition in a dental impression comprising in combination with an electric motor; of a tapered spindle frictionally carried by the shaft of said motor; a fibre polygonal cam member carried by said spindle; a vibratory arm adapted to be swung and forced into contact with said polygonal cam member; and ineans for removably mounting said vibratory arm on a work bench or the like, substantially as described.

10. An apparatus for compacting the composition of a dental model during the feeding of the composition in a dental impression comprising in combination with an electric motor, of a tapered screw threaded spindle frictionally carried by the shaft of said motor; a fibre polygonal cam member removably carried by said spindle; a vibratory means arranged above said polygonal cam adapted to be forced into contact with said member.

11. A dental apparatus comprising in combination with a motor of a spindle frictionally carried by the shaft of said motor;

a polygonal member carried by said spindle;

a platform mounted to be swung over said member and pressed into engagement therewith; and means associated with said platform adapted to control the swinging movement of said platform when swung into operative position.

12. The combination of a motor, a spindle carried by the shaft of said motor, a cam mounted upon said spindle, an upwardly inclined resilient bar pivotally supported at its lower end, and extending over and into operative relation with said cam at its upper end, said bar being movable upon said pivot into and out of operative relation with said cam, and a receptacle mounted upon the upper portion of said bar.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

DAYTON BUMGARDNER. Witnesses:

CLARENCE E. THREEDY, FREDA C. APPLETON. 

